- Invasive Species Management
Invasive Species Management
Fall Stewardship Webinar Series
Jeffco ISM and CSU Extension (Boulder, Jeffco, and Larimer Counties) are hosting a 4-week speaker series from Sept 15 through Oct. 6.
Join us for talks that will educate and inform landowners on land stewardship for small acreages and the latest trends. The talks are geared for owners of 10 acres or more but all are welcome.
Free – Register at https://bit.ly/21Stewardship
Sessions will be held virtually from 6:00–7:30 pm
Dryland Pasture Management - Joe Brummer, CSU Dept. of Soil and Crop Sciences
Fall Noxious Weed Management - Joe Swanson, Boulder County Parks and Open Space
Living With Wildlife - Mary Ann Bonnell, Jefferson County Open Space
Protecting Your Livestock - Sharon Bokan, Boulder County CSU Extension
Forest Stewardship - Nate Beckman, CSFS Golden District
What We Do
The Jefferson County Invasive Species Management program provides the public with information and offers solutions for managing invasive species and supports good stewardship of the land.
We ensure the compliance with Colorado’s noxious weed, forest pest, and agricultural vertebrate pest regulations on private, county, and state lands. We also provide technical assistance and support to county departments who are responsible for managing county owned lands.
The program coordinates with private, local, state, and federal agencies to achieve regional pest control.
Who We Are
Our staff includes the Invasive Species Management Coordinator and limited summer help.
Yellow toadflax, sometimes called butter-and-eggs, is a member of the Plantaginaceae family (formerly Scrophulariaceae). This perennial spreads by seed and extensive spreading underground roots. Large colonies can be found in disturbed areas, meadows, pastures, and rights-of-way. It is often one of the first plants to return after a forest fire.
The yellow flowers are snapdragon-shaped with a distinctive long spur and often have an orange throat. The flowers grow in groups at the end of the stems and can be found from June through September.
Multiple stems grow from the crown. Plants can grow to two feet tall. Leaves are narrow, waxy and attach directly to the stems. Each plant can produce 15,000 to 30,000 seeds that will last for about 10 years in the soil.
The taxonomy of Linaria species can be challenging because there is a lot of hybridization in the field, especially Yellow toadflax and Dalmatian toadflax here in Colorado. Yellow toadflax is native to Britain, Europe, and Asia. In the US, it is an escaped ornamental and has been grown here since the late 1600s. It has also been used for its herbal properties and as a source for dye.
A Landowner's Guide - Developing a Noxious Weed Management Plan
We developed this guide to assist landowners. The information provides steps to develop a management plan for properties that have noxious weeds.
Invasive Species 101 Webinar Series
A four session speaker series to inform landowners on invasive species terminology, identification, treatment, and the latest trends.
- March 24 - Invasive Species 101 Presentation Slides (PDF)
- April 7 - IPM Management Presentation Slides (PDF)
- April 21 - Weed ID Presentation Slides (PDF)
- May 5 - Colorado’s Aquatic Nuisance Species Presentation Slides (PDF)